what's the program mistake?

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MA
MA 2014-6-4
回答： MA 2014-11-10
clear all clc; syms x A=[x 2 1;1 0 -x;5 1 x]; b=det(A) r=solve('b=0','x')

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采纳的回答

MA
MA 2014-11-10
r=solve(b)

更多回答（2 个）

Mischa Kim
Mischa Kim 2014-6-4
Hello Ali, use instead
r = solve(b==0)
  2 个评论
MA
MA 2014-6-4
Hi,it doesn't work
Mahdi
Mahdi 2014-6-4
Why isn't it working? What's the error that you're getting?

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Mahdi
Mahdi 2014-6-4
Try this?
clear all
clc;
syms x
A=[x 2 1;1 0 -x;5 1 x];
b=det(A)
r=eval(solve(b==0))
  3 个评论
显示 1更早的评论
Mahdi
Mahdi 2014-6-4
编辑：Mahdi 2014-6-4
You will need to provide more information why you're not getting the answer that you want. Please read this.

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